not sure where to report it. it looks like what a firefox update page would look like. it tries to download a javascript file that is no doubt malware or a virus. "http://www.bestplugins.com/browser/mozilla-firefox-youtube-addon.html"

If you get a pop-up message asking to update Firefox or plugins or scanning for malware then such a message is likely a scam and you should NEVER respond to such an alert to avoid getting infected with malware.

only update Firefox via "Help -> About" or by downloading and installing Firefox from the Mozilla server and never via a pop-up or link on a web page.

plugins should only be updated via the plugin itself or by visiting the home page of the plugin.

See also:
*https://support.mozilla.org/en-US/kb/i-found-fake-firefox-update
----
If you get a pop-up message asking to update Firefox or plugins or scanning for malware then such a message is likely a scam and you should NEVER respond to such an alert to avoid getting infected with malware.
*only update Firefox via "Help -> About" or by downloading and installing Firefox from the Mozilla server and never via a pop-up or link on a web page.
*plugins should only be updated via the plugin itself or by visiting the home page of the plugin.

Here in support we can only point you to reporting links, we don't have any ability to add sites ourselves.

To get a site on the list for malware and phishing protection, you can report it here:
https://safebrowsing.google.com/safebrowsing/report_badware/
Here in support we can only point you to reporting links, we don't have any ability to add sites ourselves.

The the various extensions on page links to the extensions pages on addons.mozilla.org some of which were since either removed by author or just removed.
''Pkshadow [[#answer-1118804|said]]''
<blockquote>
Please Mark this as Solved so others can find the Answer.
</blockquote>
really? .. telling people to mark your post as solved.